<template>
  <div class="loading">
    <div style="--x:0"></div>
    <div style="--x:1"></div>
    <div style="--x:2"></div>
    <div style="--x:3"></div>
    <div style="--x:4"></div>
    <div style="--x:5"></div>
  </div>
</template>

<style scoped>
* {
  box-sizing: border-box;
}

.loading {
  height: calc(100vh - 100px);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: row;
}

.loading div {
  position: relative;
  width: 40px;
  height: 200px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.05), #eef1f5);
  margin: 20px;
  border-radius: 20px;
  border: 2px solid #eef1f5;
  box-shadow: 15px 15px 20px rgba(0, 0, 0, 0.1),
  -15px -15px 20px #fff,
  inset -5px -5px 5px rgba(255, 255, 255, 0.5),
  inset 5px 5px 5px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.loading div::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  box-shadow: inset -5px -5px 5px rgba(0, 0, 0, 0.1),
  0 420px 0 400px lightskyblue;
  animation: animate 2s ease-in-out infinite;
  animation-delay: calc(var(--x) * -0.3s);
  transform: translateY(160px);
}

@keyframes animate {
  0% {
    transform: translateY(160px);
    filter: hue-rotate(0deg);
  }
  50% {
    transform: translateY(0px);
    filter: hue-rotate(180deg);
  }
  100% {
    transform: translateY(160px);
    filter: hue-rotate(360deg);
  }
}
</style>
